/// <summary>
/// Draws a previously laid-out text at a specified offset.
/// </summary>
public void Draw(float xOff, float yOff,
RenderTextCallback renderCallback, DrawTextHint hint)
{
if (GetHLines(_totalLines) == null)
{
throw new Exception("Draw invoked on a non-laid-out text.");
}
if (GetHLines(_totalLines).Count == 0)
{
return;
}
bool styled = (_text is StyledText);
bool is_LastWord = false;
// Original brush and font
System.Drawing.Brush brushOriginal = hint.Brush;
Font fontOriginal = hint.Font;
// We now have the starting line and the number
// of total lines to layout the text in. Go for it
int iword = 0;
for (int i = _startLine; i < _startLine + _totalLines; i++)
{
PointList hLine = GetHLines(_totalLines)[i] as PointList;
for (int j = 0; j < hLine.Count; j += 2)
{
PointF pt1 = hLine[j];
PointF pt2 = hLine[j + 1];
RectangleF rc = new RectangleF(
_bounds.X + xOff + pt1.X,
_bounds.Y + yOff + pt1.Y,
pt2.X - pt1.X, pt2.Y - pt1.Y);
bool newLine = false;
int newword = FitTextInRect(iword, rc, ref newLine);
if (newword > iword)
{
// Calculate the total width of the words
// which are about to be rendered, but skip
// the whitespaces at the front and the rear
int ifront = iword;
int irear = newword - 1;
/*DON'T SKIP WHITESPACES ( next 2 lines )
*
*/
while (ifront < newword && _text.Words[ifront].IsWhitespace)
{
ifront++;
}
while (irear >= ifront && _text.Words[irear].IsWhitespace)
{
irear--;
}
int w;
float total = 0;
for (w = ifront; w <= irear; w++)
{
total += _text.Words[w].Width;
}
// Adjust the left side of the destination
// rectangle according to the specified alignment
switch (_options.Alignment)
{
case StringAlignment.Near:
// Do nothing
break;
case StringAlignment.Center:
rc.X = rc.X + (rc.Width - total) / 2;
break;
case StringAlignment.Far:
rc.X = rc.Right - total;
break;
}
// Render the words in the range [ifront, irear]
for (w = ifront; w <= irear; w++)
{
Word word = _text.Words[w];
if (w == _text.Words.Count - 1)
{
is_LastWord = true;
}
else
{
is_LastWord = false;
}
if (!_fits && hint.AddEllipsis && styled)
{
if (i == _startLine + _totalLines - 1)
{
if (j == hLine.Count - 2)
{
if (w == irear)
{
// Append the last word with ellipsis
StyledText.StyledWord sword =
word as StyledText.StyledWord;
StyledText.StyledWord newWord = null;
int chars = sword.Value.Length;
float width = sword.Width;
do
{
newWord = new StyledText.StyledWord(
sword.Value.Substring(0, chars) + "...", sword.Format, sword.Color);
newWord.UpdateMeasures(hint.Graphics, hint.Font);
chars--;
}while (chars > 0 && newWord.Width > width);
word = newWord;
}
}
}
}
/*DON'T SKIP WHITESPACES ( next line )
*
*/
if (!word.IsLineBreak && !word.IsWhitespace)
{
if (styled)
{
// In case of styled text formatting,
// apply fonts and colors
StyledText.StyledWord sword =
word as StyledText.StyledWord;
hint.Font = sword.CreateFont(hint.Font);
hint.Brush = sword.CreateBrush(hint.Brush);
rc.Y += sword.YOffset;
}
// Add 10 to width and height becaus GDI+ stupid
// and clips the text
hint.IsLastLine = is_LastWord;
hint.CurrentWord = word;
renderCallback(word.Value, new RectangleF(
rc.X, rc.Y, word.Width + 10, rc.Height + 10), hint);
if (styled)
{
// Restore font and brush
StyledText.StyledWord sword =
word as StyledText.StyledWord;
sword.DisposeFont(hint.Font);
sword.DisposeBrush(hint.Brush);
hint.Font = fontOriginal;
hint.Brush = brushOriginal;
rc.Y -= sword.YOffset;
}
}
rc.X += _text.Words[w].Width;
}
iword = newword;
}
if (newLine)
{
break;
}
}
}
}
/// <summary>
/// Callback internal routine called when text is being rended
/// </summary>
/// <param name="text">Rendered text</param>
/// <param name="dest">Destination text area</param>
/// <param name="hint">Hint object</param>
internal void ___TextCallback(string text, RectangleF dest, DrawTextHint hint)
{
float fDX = 0, fDY = 0;
sTextLine+=text;
XmlNode new_tspan = null;
if ( hint == null )
return;
if ( hint.rect == RectangleF.Empty )
return;
if ( hint.m_TextNode == null )
return;
if ( m_lastY==0 )
{
m_lastX = dest.X;
m_lastY = dest.Y;
}
StyledText.StyledWord sword = null;
if ( hint.CurrentWord is StyledText.StyledWord )
{
sword = hint.CurrentWord as StyledText.StyledWord;
}
new_tspan = hint.m_TextNode.InsertAfter(m_InnerDoc.CreateNode(XmlNodeType.Element,"tspan", sNsDefault), hint.m_TextNode.LastChild);
if ( new_tspan!=null)
{
new_tspan.InnerText = text;
if ( IsTable)
{
if (m_lastY != dest.Y)
{
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("x"));
new_tspan.Attributes["x"].Value = Unit2PixStr(hint.rect.X + hint.rect.Width/2);
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("dy"));
new_tspan.Attributes["dy"].Value = Unit2PixStr(dest.Y - m_lastY );
m_lastY = dest.Y;
}
}
else
{
if (!IsTransparent)
{
fDX = (dest.Width - 10)/2;
fDY = (dest.Height -10)/2;
}
if (sword != null)
{
if ( sword.YOffset!=0)
{
fDY-=sword.YOffset;
Trace.WriteLine(String.Format("SWORD OFFSET: {0}",sword.YOffset));
}
}
if (!m_GlueLines )
{
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("x"));
new_tspan.Attributes["x"].Value = Unit2PixStr(hint.rect.X + dest.X + fDX);
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("y"));
new_tspan.Attributes["y"].Value = Unit2PixStr(hint.rect.Y + dest.Y + fDY );
}
else
{
if (m_lastY != dest.Y)
{
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("x"));
new_tspan.Attributes["x"].Value = Unit2PixStr(hint.rect.X + hint.rect.Width/2);
m_lastY = dest.Y;
}
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("y"));
new_tspan.Attributes["y"].Value = Unit2PixStr(hint.rect.Y + dest.Y + fDY );
}
}
if ( hint.CurrentWord is StyledText.StyledWord )
{
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("fill"));
new_tspan.Attributes["fill"].Value = SvgManager.Color2Str(sword.Color);
if (( sword.Format & Styles.Bold) >0 )
{
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("font-weight"));
new_tspan.Attributes["font-weight"].Value = "bold";
}
if (( sword.Format & Styles.Italic) >0 )
{
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("font-style"));
new_tspan.Attributes["font-style"].Value = "italic";
}
if (( sword.Format & Styles.Underline) >0 )
{
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("text-decoration"));
new_tspan.Attributes["text-decoration"].Value = "underline";
}
if (( sword.Format & Styles.Sup) >0 )
{
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("baseline-shift"));
new_tspan.Attributes["baseline-shift"].Value = "super";
}
if (( sword.Format & Styles.Sub) >0 )
{
new_tspan.Attributes.Append(m_InnerDoc.CreateAttribute("baseline-shift"));
new_tspan.Attributes["baseline-shift"].Value = "sub";
}
}
}
;
}
/// <summary>
/// Adds text to speciafied Flowchart.NET node
/// </summary>
/// <param name="ActiveNode">Node reference</param>
/// <param name="Text2Render">String text to be added</param>
/// <param name="Font2Render">Font to be used for text drawing</param>
/// <param name="Rect2Render">Rectangle of the text area</param>
/// <param name="Color2Render">Color for text rendering</param>
/// <param name="TextFormat2Render">Text format for text renedering</param>
/// <param name="IsStyled">If TRUE the text is styled</param>
/// <returns>Returns recently added to SVG XML "text" node</returns>
public XmlNode AddText( Node ActiveNode, string Text2Render, Font Font2Render, RectangleF Rect2Render, Color Color2Render, StringFormat TextFormat2Render , bool IsStyled , float angle)
{
Layout tl = null;
LayoutOptions lo;
DrawTextHint dhint = null;
StyledText stext = null;
PlainText text = null;
System.Drawing.SolidBrush br = null;
GraphicsPath path = null;
PointF[] pF = null;
string sPath = "";
double OffsetY = 0;
double OffsetX = 0;
int tlen = 0;
try
{
if (( Text2Render == null ) || ( Text2Render==""))
return null;
m_InnerNode = m_InnerRoot.InsertAfter(m_InnerDoc.CreateNode(XmlNodeType.Element,"text", sNsDefault), m_InnerRoot.LastChild);
if ( m_InnerNode ==null )
return m_InnerNode;
if ( TextFormat2Render.Alignment == StringAlignment.Near )
Rect2Render.Width+=15;
path = new GraphicsPath(FillMode.Winding);
IsTransparent = false;
IsTable = false;
if ( ActiveNode == null )
{
sPath = Rect2Path(Rect2Render, ref path);
}
else if ( ActiveNode is Box )
{
IsTransparent = ((Box) ActiveNode).Transparent;
if ( ((Box) ActiveNode).Shape == null )
{
sPath = Shape2Path((Box) ActiveNode, ref path , null);
}
else
sPath = Complex2Path(Rect2Render, ( ((Box) ActiveNode).Shape.TextArea == null )? ((Box) ActiveNode).Shape.Outline : ((Box) ActiveNode).Shape.TextArea, ref path );
}
else if ( ActiveNode is Table )
{
sPath = Rect2Path(Rect2Render, ref path);
IsTable = true;
OffsetX = -Rect2Render.Width/2;
}
else
{
return null;
}
m_InnerNode.Attributes.Append(m_InnerDoc.CreateAttribute("x"));
m_InnerNode.Attributes["x"].Value = String.Format("{0}px",Unit2Pix(Rect2Render.X+Rect2Render.Width/2));
m_InnerNode.Attributes.Append(m_InnerDoc.CreateAttribute("y"));
m_InnerNode.Attributes["y"].Value = String.Format("{0}px",Unit2Pix(Rect2Render.Y + Rect2Render.Height/2));
m_InnerNode.Attributes.Append(m_InnerDoc.CreateAttribute("dx"));
m_InnerNode.Attributes["dx"].Value = String.Format("{0}px",Unit2Pix(OffsetX));
m_InnerNode.Attributes.Append(m_InnerDoc.CreateAttribute("dy"));
m_InnerNode.Attributes["dy"].Value = String.Format("{0}px",Unit2Pix(OffsetY));
m_InnerNode.Attributes.Append(m_InnerDoc.CreateAttribute("font-family"));
m_InnerNode.Attributes["font-family"].Value = Font2Render.FontFamily.Name.ToString();
m_InnerNode.Attributes.Append(m_InnerDoc.CreateAttribute("font-size"));
m_InnerNode.Attributes["font-size"].Value = Unit2Pix(Font2Render.Size, Font2Render.Unit).ToString();
m_InnerNode.Attributes.Append(m_InnerDoc.CreateAttribute("fill"));
m_InnerNode.Attributes["fill"].Value = SvgManager.Color2Str(Color2Render);
m_InnerNode.Attributes.Append(m_InnerDoc.CreateAttribute("style"));
m_InnerNode.Attributes["style"].Value = SvgManager.Align2Str(TextFormat2Render.Alignment);
IntPtr hWnd = GetActiveWindow();
if ( IsStyled )
{
stext = new StyledText();
stext.Setup(Text2Render, System.Drawing.Graphics.FromHwnd(hWnd) ,Font2Render);
tlen = stext.PlainText.Length;
}
else
{
text = new PlainText();
text.Setup(Text2Render, System.Drawing.Graphics.FromHwnd(hWnd) ,Font2Render);
tlen = text.PlainText.Length;
}
path.Flatten();
pF = (PointF[])path.PathPoints.Clone();
path.Dispose();
tl = new Layout();
br = new System.Drawing.SolidBrush(Color2Render);
lo = new LayoutOptions();
dhint = new DrawTextHint(System.Drawing.Graphics.FromHwnd(hWnd),
Font2Render, br ,TextFormat2Render, false , m_InnerNode, Rect2Render );
m_lastY = 0;
m_lastX = 0;
sTextLine = "";
lo.Alignment = TextFormat2Render.Alignment;
lo.LineAlignment = TextFormat2Render.LineAlignment;
tl.LayoutInPolygon((IsStyled ? (Text) stext : (Text) text), docToLocal(pF, Rect2Render),lo);
tl.Draw(0,0,new RenderTextCallback(___TextCallback),dhint);
AddRotation(m_InnerNode, Rect2Render , angle );
}
catch (Exception ex)
{
Trace.WriteLine(String.Format("{0} error {1}\n","SvgManager.AddText)",ex.Message));
}
return m_InnerNode;
}
/// <summary>
/// Draws a previously laid-out text at a specified offset.
/// </summary>
public void Draw(float xOff, float yOff,
RenderTextCallback renderCallback, DrawTextHint hint)
{
if (GetHLines(_totalLines) == null)
throw new Exception("Draw invoked on a non-laid-out text.");
if (GetHLines(_totalLines).Count == 0)
return;
bool styled = (_text is StyledText);
bool is_LastWord = false;
// Original brush and font
System.Drawing.Brush brushOriginal = hint.Brush;
Font fontOriginal = hint.Font;
// We now have the starting line and the number
// of total lines to layout the text in. Go for it
int iword = 0;
for (int i = _startLine; i < _startLine + _totalLines; i++)
{
PointList hLine = GetHLines(_totalLines)[i] as PointList;
for (int j = 0; j < hLine.Count; j += 2)
{
PointF pt1 = hLine[j];
PointF pt2 = hLine[j + 1];
RectangleF rc = new RectangleF(
_bounds.X + xOff + pt1.X,
_bounds.Y + yOff + pt1.Y,
pt2.X - pt1.X, pt2.Y - pt1.Y);
bool newLine = false;
int newword = FitTextInRect(iword, rc, ref newLine);
if (newword > iword)
{
// Calculate the total width of the words
// which are about to be rendered, but skip
// the whitespaces at the front and the rear
int ifront = iword;
int irear = newword - 1;
/*DON'T SKIP WHITESPACES ( next 2 lines )
*
*/
while (ifront < newword && _text.Words[ifront].IsWhitespace)
ifront++;
while (irear >= ifront && _text.Words[irear].IsWhitespace)
irear--;
int w;
float total = 0;
for (w = ifront; w <= irear; w++)
total += _text.Words[w].Width;
// Adjust the left side of the destination
// rectangle according to the specified alignment
switch (_options.Alignment)
{
case StringAlignment.Near:
// Do nothing
break;
case StringAlignment.Center:
rc.X = rc.X + (rc.Width - total) / 2;
break;
case StringAlignment.Far:
rc.X = rc.Right - total;
break;
}
// Render the words in the range [ifront, irear]
for (w = ifront; w <= irear; w++)
{
Word word = _text.Words[w];
if ( w == _text.Words.Count -1 )
is_LastWord = true;
else
is_LastWord = false;
if (!_fits && hint.AddEllipsis && styled)
{
if (i == _startLine + _totalLines - 1)
{
if (j == hLine.Count - 2)
{
if (w == irear)
{
// Append the last word with ellipsis
StyledText.StyledWord sword =
word as StyledText.StyledWord;
StyledText.StyledWord newWord = null;
int chars = sword.Value.Length;
float width = sword.Width;
do
{
newWord = new StyledText.StyledWord(
sword.Value.Substring(0, chars) + "...", sword.Format, sword.Color);
newWord.UpdateMeasures(hint.Graphics, hint.Font);
chars--;
}
while (chars > 0 && newWord.Width > width);
word = newWord;
}
}
}
}
/*DON'T SKIP WHITESPACES ( next line )
*
*/
if (!word.IsLineBreak && !word.IsWhitespace)
{
if (styled)
{
// In case of styled text formatting,
// apply fonts and colors
StyledText.StyledWord sword =
word as StyledText.StyledWord;
hint.Font = sword.CreateFont(hint.Font);
hint.Brush = sword.CreateBrush(hint.Brush);
rc.Y += sword.YOffset;
}
// Add 10 to width and height becaus GDI+ stupid
// and clips the text
hint.IsLastLine = is_LastWord;
hint.CurrentWord = word;
renderCallback(word.Value, new RectangleF(
rc.X, rc.Y, word.Width + 10 , rc.Height + 10), hint);
if (styled)
{
// Restore font and brush
StyledText.StyledWord sword =
word as StyledText.StyledWord;
sword.DisposeFont(hint.Font);
sword.DisposeBrush(hint.Brush);
hint.Font = fontOriginal;
hint.Brush = brushOriginal;
rc.Y -= sword.YOffset;
}
}
rc.X += _text.Words[w].Width;
}
iword = newword;
}
if (newLine)
break;
}
}
}
